<!--下拉选择-->
<template>
  <el-cascader
    v-model="value"
    @change="mySubmit"
    :id="'c' + controlId"
    :name="'c' + controlId"
    :props="propsCascader"
    :size="size"
    :options="optionList2"
    :filter-method="filterMethod"
    filterable
  >
  </el-cascader>
</template>

<script>
import { defineComponent } from 'vue'
// 引入表单子控件的管理类
import formItemManage from '../controlManage/formItemManage.js'
// 引入组件需要的属性
import { baseFormProps } from '../controlConfig/formItemMeta.js'

const options = [
  {
    value: 'zhinan',
    label: '指南',
    children: [{
      value: 'shejiyuanze',
      label: '设计原则',
      children: [{
        value: 'yizhi',
        label: '一致'
      }, {
        value: 'fankui',
        label: '反馈'
      }, {
        value: 'xiaolv',
        label: '效率'
      }, {
        value: 'kekong',
        label: '可控'
      }]
    }, {
      value: 'daohang',
      label: '导航',
      children: [{
        value: 'cexiangdaohang',
        label: '侧向导航'
      }, {
        value: 'dingbudaohang',
        label: '顶部导航'
      }]
    }]
  },
  {
    value: 'zujian',
    label: '组件',
    children: [{
      value: 'basic',
      label: 'Basic',
      children: [{
        value: 'layout',
        label: 'Layout 布局'
      }, {
        value: 'color',
        label: 'Color 色彩'
      }, {
        value: 'typography',
        label: 'Typography 字体'
      }, {
        value: 'icon',
        label: 'Icon 图标'
      }, {
        value: 'button',
        label: 'Button 按钮'
      }]
    }, {
      value: 'form',
      label: 'Form',
      children: [{
        value: 'radio',
        label: 'Radio 单选框'
      }, {
        value: 'checkbox',
        label: 'Checkbox 多选框'
      }, {
        value: 'input',
        label: 'Input 输入框'
      }, {
        value: 'input-number',
        label: 'InputNumber 计数器'
      }, {
        value: 'select',
        label: 'Select 选择器'
      }, {
        value: 'cascader',
        label: 'Cascader 级联选择器'
      }, {
        value: 'switch',
        label: 'Switch 开关'
      }, {
        value: 'slider',
        label: 'Slider 滑块'
      }, {
        value: 'time-picker',
        label: 'TimePicker 时间选择器'
      }, {
        value: 'date-picker',
        label: 'DatePicker 日期选择器'
      }, {
        value: 'datetime-picker',
        label: 'DateTimePicker 日期时间选择器'
      }, {
        value: 'upload',
        label: 'Upload 上传'
      }, {
        value: 'rate',
        label: 'Rate 评分'
      }, {
        value: 'form',
        label: 'Form 表单'
      }]
    }, {
      value: 'data',
      label: 'Data',
      children: [{
        value: 'table',
        label: 'Table 表格'
      }, {
        value: 'tag',
        label: 'Tag 标签'
      }, {
        value: 'progress',
        label: 'Progress 进度条'
      }, {
        value: 'tree',
        label: 'Tree 树形控件'
      }, {
        value: 'pagination',
        label: 'Pagination 分页'
      }, {
        value: 'badge',
        label: 'Badge 标记'
      }]
    }, {
      value: 'notice',
      label: 'Notice',
      children: [{
        value: 'alert',
        label: 'Alert 警告'
      }, {
        value: 'loading',
        label: 'Loading 加载'
      }, {
        value: 'message',
        label: 'Message 消息提示'
      }, {
        value: 'message-box',
        label: 'MessageBox 弹框'
      }, {
        value: 'notification',
        label: 'Notification 通知'
      }]
    }, {
      value: 'navigation',
      label: 'Navigation',
      children: [{
        value: 'menu',
        label: 'NavMenu 导航菜单'
      }, {
        value: 'tabs',
        label: 'Tabs 标签页'
      }, {
        value: 'breadcrumb',
        label: 'Breadcrumb 面包屑'
      }, {
        value: 'dropdown',
        label: 'Dropdown 下拉菜单'
      }, {
        value: 'steps',
        label: 'Steps 步骤条'
      }]
    }, {
      value: 'others',
      label: 'Others',
      children: [{
        value: 'dialog',
        label: 'Dialog 对话框'
      }, {
        value: 'tooltip',
        label: 'Tooltip 文字提示'
      }, {
        value: 'popover',
        label: 'Popover 弹出框'
      }, {
        value: 'card',
        label: 'Card 卡片'
      }, {
        value: 'carousel',
        label: 'Carousel 走马灯'
      }, {
        value: 'collapse',
        label: 'Collapse 折叠面板'
      }]
    }]
  }, {
    value: 'ziyuan',
    label: '资源',
    children: [{
      value: 'axure',
      label: 'Axure Components'
    }, {
      value: 'sketch',
      label: 'Sketch Templates'
    }, {
      value: 'jiaohu',
      label: '组件交互文档'
    }]
  }
]

const foo = {
  levelName: ['foo1', 'foo2', 'foo3'],
  foo1: [
    { value: 'zhinan', label: '指南1' },
    { value: 'zujian', label: '组件1' },
    { value: 'ziyuan', label: '资源1' }
  ],
  foo2: [
    { pId: 'zhinan', value: 'shejiyuanze', label: '设计原则' },
    { pId: 'zhinan', value: 'daohang', label: '导航', leaf: true },
    { pId: 'zujian', value: 'basic', label: 'basic', leaf: true },
    { pId: 'zujian', value: 'form', label: 'form', leaf: true }
  ],
  foo3: [
    { pId: 'shejiyuanze', value: 'yizhi', label: '一致', leaf: true },
    { pId: 'shejiyuanze', value: 'fankui', label: '反馈', leaf: true }
  ]
}

const cascaderManage = (data) => {
  // let id = 0

  const levelName = data.levelName
  // const options = []

  // 级联需要的属性 props
  const propsCascader = {
    // multiple: false, // 单选还是多选 多选返回 value 的二维数组
    lazy: true, // 动态级联
    lazyLoad (node, resolve) { // 响应函数
      console.log('node', node)
      const { level } = node
      // 判断级数是否超过数组下标
      if (levelName.length >= level) {
        // 找到子数据-
        console.log(levelName[level])
        const key = levelName[level]
        const newNode = data[key].filter((item) => item.pId === node.value)
        resolve(newNode) // 交给组件
      } else {
        resolve([{
          value: '22',
          label: '选项11',
          leaf: true
        }])
      }
    }
  }

  return {
    propsCascader
  }
}

export default defineComponent({
  name: 'el-from-select-cascader',
  props: {
    modelValue: [String, Number, Array],
    ...baseFormProps // 基础属性
  },
  emits: ['update:modelValue', 'myChange', 'change', 'blur', 'focus'],
  setup (props, context) {
    const {
      propsCascader
    } = cascaderManage(foo)

    const filterMethod = (node, value) => {
      console.log('filterMethod1', node)
      console.log('filterMethod2', value)
    }

    return {
      propsCascader,
      filterMethod,
      optionList1: options,
      optionList2: foo.foo1,
      ...formItemManage(props, context)
    }
  }
})
</script>
